There is a terrific app that functions slightly different, in that the shipping rates by location will appear on the cart page instead of a shipping policy page. However, the end result is that your customers will be informed of the rates based on their country. The app is called Shipping Rates Calculator Plus and you can check out their app demo here. The app acts as a shipping rates calculator that will automatically detect the visitor's geolocation on your cart page.
I hope this helps! If there is anything else I can help you with, please let me know.